{"schemaVersion":3,"id":"CVE-2026-75602","aliases":["GHSA-h6cj-26g5-67fv","GO-2026-6368"],"status":"published","duplicateOf":null,"title":null,"description":"OpenList a file list program that supports multiple storage. Prior to 4.2.3, OpenList's offline-download feature at POST /api/fs/add_offline_download with tool: \"SimpleHttp\" accepts an attacker-supplied URL and saves its bytes under a per-task temporary directory before transferring them to the user's destination storage. The temporary filename comes from the attacker-controlled Content-Disposition header, is passed from parseFilenameFromContentDisposition in internal/offline_download/http/util.go to filepath.Join(task.TempDir, filename) in SimpleHttp.Run in internal/offline_download/http/client.go, and is opened with os.Create without a containment check. Because filepath.Join cleans .. segments, a non-admin user with PermAddOfflineDownload on any path can traverse out of task.TempDir and create, truncate, or overwrite any file writable by the OpenList process whose parent directory already exists. The server/handles/offline_download.go AddOfflineDownload route uses normal user authentication rather than AuthAdmin, and local-storage destinations fall through tryPutUrl in internal/offline_download/tool/add.go to the vulnerable SimpleHttp.Run path. This issue is fixed in version 4.2.3.","dates":{"published":"2026-09-03T16:53:16.054Z","modified":"2026-09-05T01:58:23.299Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","exploitability":3.1,"impact":8.7,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00694,"percentile":0.52065,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.263,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00431},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00694,"percentile":0.52065}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00694,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00694,"percentile":0.52065}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","description":"The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/22.html"},{"id":"CWE-73","name":"External Control of File Name or Path","description":"The product allows user input to control or influence paths or file names that are used in filesystem operations.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/73.html"}],"affected":[{"vendor":"github.com/OpenListTeam","product":"OpenList","name":"github.com/OpenListTeam/OpenList","label":"OpenList","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/OpenListTeam/OpenList","purlType":"golang","versions":[{"text":"< 4.2.3","noFixRecorded":false,"fixedIn":null},{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"< 4.2.3 | All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"github.com/OpenListTeam/OpenList","product":"v3","name":"github.com/OpenListTeam/OpenList/v3","label":"v3","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/OpenListTeam/OpenList/v3","purlType":"golang","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"github.com/OpenListTeam/OpenList","product":"v4","name":"github.com/OpenListTeam/OpenList/v4","label":"v4","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/OpenListTeam/OpenList/v4","purlType":"golang","versions":[{"text":"< 4.2.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.2.3","eol":null,"hubHref":null},{"vendor":"openlistteam","product":"openlist","name":"OpenList","label":"openlist","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 4.2.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.2.3","eol":null,"hubHref":"/vendor/openlistteam/openlist"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/OpenListTeam/OpenList/security/advisories/GHSA-h6cj-26g5-67fv","label":"github.com/OpenListTeam/OpenList/security/advisories/GHSA-h6cj-26g5-67fv","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Advisory"]},{"url":"https://github.com/OpenListTeam/OpenList/commit/9cc5dd969b9833c8cb4e14c338c3571dfdbe2108","label":"github.com/OpenListTeam/OpenList/commit/9cc5dd969b9833c8cb4e14c338c3571dfdbe2108","hostname":"github.com","tags":["X Refsource MISC","WEB","FIX"]},{"url":"https://github.com/OpenListTeam/OpenList/releases/tag/v4.2.3","label":"github.com/OpenListTeam/OpenList/releases/tag/v4.2.3","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/OpenListTeam/OpenList","label":"github.com/OpenListTeam/OpenList","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:21897-1","SUSE-SU-2026:23855-1","SUSE-SU-2026:23863-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:21897-1","SUSE-SU-2026:23855-1","SUSE-SU-2026:23863-1"]},"timeline":[{"kind":"published","date":"2026-09-03T16:53:16.054Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-05T01:58:23.299Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T18:17:28.174Z","stale":false,"partial":false}}